In contrast to chemical single parameter analysis, luminous bacteria tests are able to evaluate the toxicity of a sample. As an internationally standardised method (EN ISO 11348) it is one of the most important biological tests for toxicity analysis beside the also standardised fish-, daphnia- and algae-tests. For the performance of luminous bacteria tests a wide range of liquid- and freeze-dried products is available.

Advantages of BioFixÒ Lumi luminous bacteria test
patented procedure reliable and safe measurement results without high efforts trouble-free disposal suitable for analysis of solid samples (e.g. soil, sediments, waste) determination of gene toxic substances packaging sizes according to consumption suitable for ground-, surface-, seepage- and waste water applicable for analysis of landfills and abandoned sites

Luminous bacteria are used as test organisms because of their natural luminescence. In luminous bacteria tests, the marine bacterium Vibrio fischeri NRRL B-11177 is used, a halophile, facultative anaerobic, gram-negative rod with polar flagellum. Bioluminescence is a part of the metabolism of these bacteria. Toxic substances influence this sensitive metabolism and inhibit the bioluminescence. The inhibition of the bacteria’s bioluminescence is determined in a static test by mixing a defined amount of a sample with a luminous bacteria suspension in a cuvette. Subsequently, the inhibition of the luminescence in the sample is determined in comparison to an uninhibited control solution. The evaluation of the toxicity analysis is performed with the BioFix® Lumi-10, a universal luminometer, which is suitable for portable use.